Build a data-centred equal-area CRS (Lambert Azimuthal Equal Area)

EOO and AOO must be measured on an equal-area projection. This helper returns a LAEA proj string centred on the centroid of geom, which minimises areal distortion for the spatial extent of a single species.

Usage

laea_crs(geom)

Arguments

geom

An sf or sfc object (any CRS; will be treated as WGS84 longitude/latitude for centroid computation).

Value

A character proj4 string suitable for sf::st_transform().